Vehicle-brake



(No Model.)

J. H. GRAYSON. VEHICLE BRAKE- Patented A r. 18, 1893.

Wifgcsse UNITED STATES PATENT OFFICE.

JAMES H. GRAYSON, OF GRAYSONTOWN, VIRGINIA.

VEHICLE-BRAKE.

SPECIFICATION forming part of Letters Patent No. 495,882, dated April 18, 1893.

Application fileddannary 21, 1892. Serial No. 459,127. (No model.)

To all whom it may concern.-

Be it known that I, J AMES H. GRAYSON, a citizen of the United States, residing at Graysontown, in the county of Montgomery and State of Virginia, have invented a new and useful Vehicle-Brake, of which the following is a specification.

The invention relates to improvements in brakes.

The object of the present invention is to improve the construction of brakes, and to enable brake shoes to be anvantageously applied to wheels with great force and at the expenditure of a small amount of power.

The invention consists in the construction and novel combination and arrangement. of parts hereinafter fully described, illustrated in the accompanying drawings and pointed out in the claims hereto appended.

In the drawings-Figure l is a perspective view of a running gear provided with a brake constructed in accordance with this invention. Fig. 2 is a longitudinal sectional view of a portion of the running gear. Fig. 3 is a detail perspective view of the approximately heart-shaped frame, which forms the double inclined ways. Fig. 4 is a detail sectional view taken transversely through one of the rollers and its heart-shaped frame.

Like numerals of reference indicate corresponding parts in all the figures of the drawings.

1 designates a brake-bar carrying at its end brake-shoes 2, and suspended from a transverse bar 3-by means of rollers 4 and guide frames 5 which are secured by clips 6 to the end of the transverse bar 3. The transverse bar 3 is bolted to the upper faces of the rear hounds; and the guide-frames 5 depend from the ends of the transverse bar. The guide frame 5 is approximately heart-shaped and forms double inclined ways and receives within it the roller l, which is grooved. The roller 4 is journaled in angle bearings 7 and its groove conforms to the frame 5,which is constructed of rounded metal. The angle bearings are secured to the upper face of the brake-bar; and the latter is connected near each end by a rod 8 with an arm of a rockshaft 9, which is provided at one end with a handle or a lever 10. When the rock-shaft is turned to draw the brake bar rearward the grooved rollers move down the inclined ways of the heart-shaped frame in the direction of the hind wheels, and thereby enable the brakeshoes to be effectively and advantageously applied with great force at the expense of a small amount of power. The direction in which the hind Wheels rotate co-operates with the inclined ways and serves to bring the brake shoes in closer contact with the wheels. This arrangement enables the brake to be applied with great force without severe strains on the running gear.

In the accompanying drawings the brake is shown applied to an ordinary vehicle running gear, but it is also applicable to other forms of vehicles and to cars as the double inclined ways of the frame forms an advantageous and efiective guide for directing brakeshoes into and out of engagement with Wheels; and I desire it to be understood that changes in the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Instead of employing double inclines, single inclines may be used to direct the brake-shoes downward into engagement with the wheels.

What I claim is- 1. In abrake, the combination with a brakebar carrying shoes and provided with rollers, of guide-frames provided with inclined ways for the rollers to travel on adapted to direct the brake-shoes into engagement with wheels, substantially as described.

2. In abrake, the combination with a brakebar carrying brake-shoes and provided with rollers extending upward from it, of approximately heart-shaped guide-frames receiving the rollers and forming double inclined ways, substantially as described.

3. In a brake, the combination of a brakebar carrying brake-shoes and provided with upwardly extending grooved rollers, of the approximately heart-shaped guide-frames receiving the rollers and having rounded sides, substantially as described.

4. The combinationwith a running gear provided with a transverse bar, of approximately heart-shaped guide frames provided with clips securing the frames to the bar, a

brake-bar carrying brake-shoes and provided my own 1 have hereto afiixed my signature in with angle bearings, rollers arranged in the the presence of two witnesses. bearings and received by said frame, and a rock-shaft journaled on the running gear and JAMES H. GRAYSON. 5 connected with the brake-bar and provided Witnesses:

with a handle, substantially as described. J. H. H. GRAVELY,

In testimony that I claim the foregoing as J. H. TAYLOR. 

